One of the mothers realized the mistake but chose to keep quiet. Until the day, more than 40 years later, when she decided to tell both daughters what happened. How the truth changed two families' lives—and how it didn't.

Reporter Jake Halpern tells the story of Marti Miller and Sue McDonald, the daughters who were switched at birth, and the many complications that came with learning the truth. Jake is writer whose books include Fame Junkies and Braving Home. (25 minutes) Family • History